MC68020RC20E

Product Summary

The MC68020RC20E is a microprocessor. It consists of two groups of registers, the user model and the supervisor model, that correspond to the user and supervisor privilege levels, respectively. User programs executing at the user privilege level use the registers of the MC68020RC20E. System software executing at the supervisor level uses the control registers of the supervisor level to perform supervisor functions.

Parametrics

MC68020RC20E absolute maximum ratings: (1)Supply Voltage, VCC: –0.3 to +7.0 V; (2)Input Voltage, Vin: –0.5 to +7.0 V; (3)Operating Temperature Range, Minimum Ambient Temperature, TA: 0℃; Maximum Ambient Temperature: 70℃; Maximum Junction Temperature, TJ: 110℃; (4)Storage Temperature Range, Tstg: –55 to 150℃.

Features

MC68020RC20E features: (1)Object-Code Compatible with Earlier M68000 Microprocessors; (2)Addressing Mode Extensions for Enhanced Support of High-Level Languages; (3)New Bit Field Data Type Accelerates Bit-Oriented Applications—e.g., Video Graphics; (4)An On-Chip Instruction Cache for Faster Instruction Execution; (5)Coprocessor Interface to Companion 32-Bit Peripherals—the MC68881 and MC68882 Floating-Point Coprocessors and the MC68851 Paged Memory Management Unit; (6)Pipelined Architecture with High Degree of Internal Parallelism Allowing Multiple Instructions To Be Executed Concurrently; (7)High-Performance Asynchronous Bus Is Nonmultiplexed and Full 32 Bits; (8)Dynamic Bus Sizing Efficiently Supports 8-/16-/32-Bit Memories and Peripherals; (9)Full Support of Virtual Memory and Virtual Machine; (10)Sixteen 32-Bit General-Purpose Data and Address Registers; (11)Two 32-Bit Supervisor Stack Pointers and Five Special-Purpose Control Registers; (12)Eighteen Addressing Modes and Seven Data Types; (13)4-Gbyte Direct Addressing Range for the MC68020; (14)16-Mbyte Direct Addressing Range for the MC68EC020; (15)Selection of Processor Speeds for the MC68020: 16.67, 20, 25, and 33.33 MHz; (16)Selection of Processor Speeds for the MCEC68020: 16.67 and 25 MHz.

Diagrams